EP 3812026 A4 20220316 - FILTER MEDIUM AND FILTER UNIT PROVIDED WITH SAME
Title (en)
FILTER MEDIUM AND FILTER UNIT PROVIDED WITH SAME
Title (de)
FILTERMEDIUM UND DAMIT VERSEHENE FILTEREINHEIT
Title (fr)
MILIEU FILTRANT ET UNITÉ DE FILTRE ÉQUIPÉE PAR CELUI-CI
Publication
Application
Priority
- JP 2018106513 A 20180601
- JP 2019021892 W 20190531
Abstract (en)
[origin: EP3812026A1] The filter medium of the present disclosure includes a base layer having air permeability, and the base layer has a modified surface by fibrils of polytetrafluoroethylene. The modified surface of the base layer may be exposed. A modification amount of the fibrils in the modified surface is, for example, less than 0.5 g/m<sup>2</sup>. The base layer may include a fiber material, and an example of the base layer including a fiber material is a non-woven fabric. In the filter medium of the present disclosure, permeation of water into the inside of the medium can be inhibited.
IPC 8 full level
B01D 39/16 (2006.01); B01D 39/08 (2006.01); B01D 46/52 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/26 (2006.01); B01D 71/36 (2006.01); B01D 71/48 (2006.01)
CPC (source: EP KR US)
B01D 39/083 (2013.01 - EP KR); B01D 39/1623 (2013.01 - EP KR US); B01D 39/163 (2013.01 - EP KR); B01D 46/521 (2013.01 - KR US); B01D 69/02 (2013.01 - KR); B01D 69/1071 (2022.08 - KR); B01D 69/1213 (2022.08 - KR US); B01D 71/26 (2013.01 - KR); B01D 71/36 (2013.01 - KR US); B01D 71/48 (2013.01 - KR); B01D 2239/0233 (2013.01 - EP KR); B01D 2239/0428 (2013.01 - EP KR); B01D 2239/0654 (2013.01 - EP KR); B01D 2239/0668 (2013.01 - EP KR); B01D 2239/1233 (2013.01 - EP KR); B01D 2239/1258 (2013.01 - EP KR)
Citation (search report)
[XI] EP 2733163 A1 20140521 - NITTO DENKO CORP [JP]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3812026 A1 20210428; EP 3812026 A4 20220316; CN 112218696 A 20210112; CN 112218696 B 20221230; JP 7356972 B2 20231005; JP WO2019230984 A1 20210701; KR 20210014137 A 20210208; TW 202012033 A 20200401; US 2021162354 A1 20210603; WO 2019230984 A1 20191205
DOCDB simple family (application)
EP 19810027 A 20190531; CN 201980036922 A 20190531; JP 2019021892 W 20190531; JP 2020522648 A 20190531; KR 20207037118 A 20190531; TW 108119187 A 20190603; US 201917059309 A 20190531